Question

demand ,require ,request用法辨析（后面动词或名词从句如何连接）

Answer 1

只讲解这三个单词做动词的用法如下：

1.require

1）require sth (of sb)

2）require sb to do sth

3）require doing 主动表被动

4）require that-clause〔虚拟语气：(should)+V原〕

2.demand

1）demand sth of/from sb

2）demand to do sth；demand to be done

3）demand that-clause〔虚拟语气：(should)+V原〕

3.request

1）request sth of/from sb

2）request sb to do sth

3）request that-clause〔虚拟语气：(should)+V原〕